Linear Programming Production Line

AI Thread Summary
The discussion revolves around a linear programming problem involving the production of iPhones and iPods for Apple, with specific constraints on skilled labor and machine use. The owner of the manufacturing plant seeks guidance on formulating the problem rather than just receiving answers. Key points include defining the objective function for profit based on the number of units produced and establishing constraints for labor and machine time. The need to clarify terms and create meaningful equations is emphasized, as well as understanding the feasible region for production limits. The conversation highlights the importance of precise definitions and structured problem-solving in linear programming.
masrad
Messages
1
Reaction score
0
I have absolutely no ides where to go from here, I am horrible at this, If you could help me I would appreciate it, I want help doing it, not just answers.

Homework Statement


You are the owner of a manufacturing plant. We've been hired by Apple to produce iPhone and iPods. Apples pays us $50 for every iPhone and $30 for every iPod. The constraints are that I only have 480 minutes of skilled labor and 2,000 minutes of machine use.

The iPhones require 2 minutes of skilled labor and 6 minutes of machine use time.
The iPods require 1 minute of skilled labor, and 10 minutes of machine use time.

In TOTAL, I can only make 250 unitsP= Profit
A= iPhone
B= iPod

The Attempt at a Solution



a = 2(skilled) + 6(machine) + 50(profit)
b = 1(skilled) + 10(machine) + 30(profit)
 
Last edited:
Physics news on Phys.org
masrad said:
I have absolutely no ides where to go from here, I am horrible at this, If you could help me I would appreciate it, I want help doing it, not just answers.

Homework Statement


You are the owner of a manufacturing plant. We've been hired by Apple to produce iPhone and iPods. Apples pays us $50 for every iPhone and $30 for every iPod. The constraints are that I only have 480 minutes of skilled labor and 2,000 minutes of machine use.

The iPhones require 2 minutes of skilled labor and 6 minutes of machine use time.
The iPods require 1 minute of skilled labor, and 10 minutes of machine use time.

In TOTAL, I can only make 250 units


P= Profit
A= iPhone
B= iPod
Much better to write full sentences in order to be clear and precise. I presume that what you mean is that you can make P dollars if you make A iphones and B ipods.




The Attempt at a Solution



a = 2(skilled) + 6(machine) + 50(profit)
b = 1(skilled) + 10(machine) + 30(profit)
Again, you haven't defined your terms. Are "a" and "b" the same as "A" and "B"? If so that makes no sense. Those numbers look like the numbers given in how many minutes are required to make an iPhone or iPod. But then those are NOT equations. It looks like you are multiplying "2" by "skilled" and that is meaningless. And you certainly cannot add "minutes" and "dollars".

Let A be the number of iPhones made and let B be the number of iPods made. How much money would you make? That is the "object function".

How many minutes of skilled labor would be required? That must be larger than or equal to 0 and less than or equal to 480.

How many minutes of machine time would be required? That must be larger than or equal to 0 and less than or equal to 2000.

The total number of units made, A+ B, must be greater than or equal to 0 and less than or equal to 250.

The two inequalities define your "feasible region". The basic theorem of Linear programing is that max or min of a linear object function occur at the vertices of a convex polygonal feasible region.
 
I picked up this problem from the Schaum's series book titled "College Mathematics" by Ayres/Schmidt. It is a solved problem in the book. But what surprised me was that the solution to this problem was given in one line without any explanation. I could, therefore, not understand how the given one-line solution was reached. The one-line solution in the book says: The equation is ##x \cos{\omega} +y \sin{\omega} - 5 = 0##, ##\omega## being the parameter. From my side, the only thing I could...
Back
Top